And william ennis



DURYEA & ENNIS.

Heating Drum.

No. 64,293. Patented April 30, 1867.

WWW I [men/tons -PEIERS. FHOTO-UTHOGRAPHER, WASHINGTON, D c.

. nitrb 6:. I 1 time WRIGHT DU iYilA. OF GLEN COVE. NEW YORK, ANDWILLIAM ENNI ()l HUDSON, NEW JERSEY.

Letters .Pufem .Nn. 64,293, dated April 3 ,1866.

HEATING-DRUM ATTACHMENT FOR FURNACES.

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'TO ALL WHOM IT MAY CONCERN: 7

Be it known that we, WRmn'r DUILYEA, of Glen Core, in the county ofQueens, and State of New York,

and W'ILLIAM ENNIS, of Hudson, in the county of Hudson, and State of NewJersey, have invented a certain new and useful l'mprm'ement onAir-Heating and Circulating Attachments to Furnaces, of which thefollowing? is a, full, clear, and exact description, reference being hadto the accompanying drawing, forming part of this specification, and inwhich- 7 Figure 1 represents a vertical ltmgitudinal section of theapparatus constituting our improvement.

Figure 2, a transverse section of the same, taken as denoted by the linea: :v in fig. 1.

Like letters indicate like parts in both figures.

The nature of our invention consists in a. novel combination of tubularsmoke-boxes, arranged one in advance of the other, ,within a chamberprovided with partitions, and through which and through the tubes in thesmoke-boxes. which latter act as radiators, the air to be heated is madeto circulate in reverse vertical directions, being first brought incontact with the radiator nearest to the smoke outlet, and afterascending over one'partition and descending below another, is finallypassed oii' in an upward direction round and through the smoke-boxnearest to the fire, where the heat is greatest, and which bytheinereascd rarefaction there produced creates a suction on theincoming air that prevents all blowing back or failure of the air tocirculate the smoke and heated gases also being made to circulatethrough the smoke-boxes preferably in reverse vertical directions, insuccession or alternately, and entering, to give out the greatest heat,at the upper portion of the last radiating smoke-box, to aid inproducing the effect specified as regards suction on the-incoming airthrough that circulating within the apparatus.

Referring to the accompanying drawing, A represents a chamber of anydesired size or shape, also of any suitable material, and, ifpret'erred, built in masonry or brickwork. B is the air inlet to saidchamber, connecting with the outside atmosphere in any appropriatemanner, and C the outlet or outlets thereto for the air, after ithas'becn circulated within the apparatus, to pass or be led off asrequired for heating a building or other purpose. With this chamber Aare arranged any number in succession of smoke-radiating boxes D D, twoof which will be sufiicient to illustrate the invention. Thesesmoke-boxes are isolated, as it were, to allow of the air circulatinground them, and to secure a large and effective radiating. surface, andare furthermore provided with any number of tubes E E for circulation ofthe air through the boxes. Partitions G G, the one open above and theother below, are arranged across the chamber A, between the smoke-boxesD D. His the smoke inlet from the furnace to the rear radiator 01' boxI). I a lower connecting smoke pipe between the boxes D D, and J thesmoke outlet from the advance radiator or box D. Now, it will beobseived that air entering at the inlet 13 is gradually heated by itscirculation round and through the radiating smoke-box D, after which itis made to descend over the partition G, then pass from under thepartition G, and upwardly through and round the second or rear smoke-boxD, after which it may be distributed or conducted by the pipe or pipesO; The air in entering at the end of the apparatus where the smoke makesits exit by the pipe J, and where, of a consequence, less heat prevailsthan at the opposite or smoke-entry end of the apparatus, combined withits reverse travel in vertical directions, and having wholly an ascentat the hottest end, will be restrained from working back, and a suctionor perfect circulation kept up, even though the entry pipe should beexposed to an adverse current of wind, and in this connection it may bementioned that the superior rare faction at the air-exit end is not duesimply to the length of circulation established through the apparatus,but

to the relative arrangement of the courses taken by the smoke and air,the admission of the smoke to the upper portion of the radiatingsmoke-box D ulso aiding in such beneficial efi'ect.

What we claim as our invention, and desire to secure by Letters Patent,is

The apparatus constructed substantially as described, of tubularradiating smoke-boxes D D, within a chamber, A, partitions G G, andsmoke and air inlets and outlets, arranged relatively to each other toestablish a circulation through the apparatus, substantially asspecified.

WRIGHT DURYEA,

WILLIAM ENNIS.

Witncss 'es5 J. W. Coonns',- G. W. RI-ZED'.

